Rotary engine.



No. 866,767. I PATENTED SEPT. 24, 1907. E. A. BAUTER. ROTARY ENGINE.

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No 866,767. PATENTED-SEPT. 24, 1907.

' E. A. BAUTER.

ROTARY ENGINE. uruouxon FILED we. '1. 1905.

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EUGENE A. BAUTER, OF LA SALLE, ILLINOIS.

ROTARY ENGINE.

Specification of Letters Patent.

Patented Sept. 24, 1907.

Application filed August 7,1905. Serial No. 273,142.

To all whom it may concern:

Be it known that I, EUGENE A. BAUTER, a citizen of the United States, residing at La Salle, in the county of Lasalle and State of Illinois, have invented a new and useful Rotary Engine, of which the following is a specification.

My invention relates to improvements in reversible rotary engines having all the elements contained in a single casing, and in which the high pressure or operating side is separated from the non-operating orexhausting side by a so-called back pressure valve or slide which is automatically and intermittently removed to permit the wing of the rotating member to pass it and immediately inserted, to close the chambers before the high pressure elastic fluid or steam is admitted to pass the wing of the rotor forward; and has for its object to produce a simple reversible rotary engine which has all its members confined to a single casing and positively actuated and in which the leakage due to the wear of the parts is eliminated, and further to produce an engine which will utilize the expansive power of the clastic fluid employed. I attain these objects by the mechanism illustrated in the accompanying drawings in which:

.Figure I is a cross section through the center of my engine along a line at x of Fig. II. Fig. II is a longitudinal center section taken on the line y y, of Fig. I. Fig. III is a view of the left hand end showing the cocentric in section and also shows the admission valve motion. Fig. IV is a view of the right hand end showing the gears, cam and lever which operates the so-called back pressure valve. Fig. V is a front View of the rotor or rotating member. Fig. VI is a section of Fig. V on a line 2 Fig. VII is a longitudinal section of one of the rotor wings. Fig. VIII is a cross section of one of the rotor wings. Fig. IX is a view'of the left hand side packing of the rotor wings. Fig. X is a view of the outer or top packing of the rotor wings. Fig. XI is a view of the right hand side packing of the rotor wings. Fig. XII is a view of the back pressure valve. Fig. XIII is a view of the reversing plug. Fig. XIV is a view of the lever which connects the back pressure Fig. XV is a view of the cam which operates the back pressure valve.

In all the drawings like numbers refer to like parts.

Referring to the drawings, 3 is the circular casing forming the space 26 in which rotates the rotor 25. The rotor 25 has two diametrically opposite wings 2'7 and 29 each of which consists of V-shaped pieces 27 and 29 fastened to projections 31 and 32 on the rotor 25 and each of which has in its periphery and sides a rectangular slot in whichiit the outer packing 30 and the side packing 54 and 55, Figs. IXX and XI, each of which is dove-tailed as shown, and is held outward against the casing and sides by means of suitable springs behind them as shown.

The rotor 25 is mounted on a shaft 5 which is mounted in suitable bearings 2 and 4 which are fastened to the frame or base-plate 46. The circular casing 3 is also fastened to 46. 3

Starting at the left of the shaft 5 and passing to the right (in Fig. II) we first have the bearing 4, then the pulley 34, from which the power is taken from my engine, then the eccentric 44 with its accompanying strap 43, which actuates the steam admission valve 22, then the left hand wall 40 of the circular-casing 3, then the rotor 25, then the right hand wall 39, then the gear 9 then the left hand upright of bearing 2, which is so formed to enable it to carry a cam 6 between its uprights, which cam is mounted on a shaft '7, which carries a gear 8 on its left hand end which meshes with gear 9 on shaft 5. Gear 9 is double the diameter of gear 8. Cam 6 actuates the back pressure valve 14 by means of lever 11 which is pivoted to a fulcrum l0 fastened to the right hand upright of bearing 2, then by the link 45 and the rod 12. It is evident that cam 6 having only one lobe, but two times the speedof the rotor 25, will make two strokes, and will close twice While the rotor 25 makes one revolution; and the rotor and back-pressure valve are so timed that the back pressure valve 14 closes as soon as the wing 29 of the rotor has passed the back pressure valve and is far enough out of the vertical plane to permit it, and is withdrawn just before the other wing 27 comes intothe vertical plane as shown in Fig. I, which showsthe position when the back pressure valve is just ready for withdrawal, and the engine ready to exhaust from the right side of the casing 3 through the exhaust port 33.

The back pressure valve 14 is located centrally between and immediately below the steam admission ports 16 and 17 from which it is evident that if steam is admitted intermittently and at the proper time, which is controlled by the steam valve 22, through the port 16 the rotor 25 will rotate in direction of the hands of a clock; should the steam, however, be admitted through the port 1'7 the rotor 25 will rotate in the opposite direction. From this it will be seen that the direction of rotation is determined by the port that is used, only one port being used, the other in the meantime is closed. The closing of one port, while the other remains open, is accomplished by means of the reversing plug 18 which consists of a tapered cylinder which has a wide slot cut across half way through it at a point immediately above and in line with the ports 16 and 17 when said plug is in position. The plug 18 is rotated so as to allow steam to be admitted to either port by means of lever 20 which is attached to 18. From the above it is evident that my engine is a rotary engine derives its motion from an eccentric 44 on shaft 5,

through the rod 24, link 51, lever 49 which is pivoted in a standard 50 which is fastened to the casing 3, then lever 52 which is pivotally connected to one end of rod 47, the other end of rod 47 being rigidly fastened to the eccentric strap 43 as shown in Fig. III. Steam is admitted from the boiler to the steam chest, by means of the threaded opening 23.

The rotor 25, the back pressure valve 14, and the admission and cut-off valve 22, are all properly timed by the means shown in the drawings and above described, .so that the steam is admitted when the back pressure valve .is closed (inserted and seated) and the wing of the rotor has just passed out of the path of the back pressure valve and its admission is continued until the wing has traveled say one-fourth of the distance from the back pressure valve to the exhaust port 33, when the admission valve 22 closes the port 56 and the steam is permitted to expand until the rotor wing passes to the exhaustport 33 when the exhaust steam escapes; .the amount of expansion can be regulated by any of the .usual means employed and well known in reciprocating engines.

In other rotary engines great difficulty is experienced in packing the moving parts to avoid leakage of the steam due to the wear of said moving parts. In my engine, I avoid this difficulty by the use of metallic expansion rings, 38, 37, ll and 42 inserted in suitable concentric grooves in the rotor and the walls of the casing; by these means use of the usual stuffing boxes and glands is done away with. The back pressure valve when closed is seated in a slot 57 in the casing wall 40. The top of the back pressure valve has a slot in which is fitted a metallic packing 35 which is held against the inside of casing 3 by means of a spring 36. When the back pressure Valve 14 is removed to allow the wings of the rotor to pass, it is inclosed on all sides by means of the casing 15 which is securely fastened to the rotor casing wall 39. The wings of the rotor are V shaped as shown so as to reduce the clearance space in my engine to a very small amount. The wings of the rotor in my engine are packed by means of metallic packing 54, 30 and 55 shown in Figs. VII-VIIIIX-X and XI which consist of metal pieces dovetailed together as shown and forced outward by means of springs as shown in the above figures. The two wings of the rotor are fastened to two projections 31 and 32 of the rotor by means of the screws shown. I I

It is evident from the foregoing that I have a reversible rotary engine all of which is contained in a single casing.

As I can use air, or any other elastic fluid in my engine, I do not wish to limit myself to steam, but to all the elastic fluids.

I claim:

1. In a rotary engine the combination of a closed cylindrical casing which carries a balanced rotor having two diametrically oposite V-shaped wings, with a back pressure valve which slides in a direction at right angles to the plane of rotation of said rotor, with a receptacle which contains said back pressure valve while the wings are passing its path, with means for operating the said back pressure valve, with two ports, one on each side of said back pressure valve, which communicate with both sides of the back pressure and the reversing plug chamber one of said ports always being closed by the reversing plug while the other is allowed to communicate with the steam chest by means of a single port; a side valve, with means for operating same, controlling the steam supply through said single port and an exhaust port diametrically opposite steam ports.

2. In a reversible rotary engine all contained in a single casing. the combination of a closed cylindrical casing which carries a balanced rotor having two diametrically opposite V-shaped wings, with a back pressure valve which slides in a direction at right angles to the plane of rotation of said rotor, with means for operating same, with a receptacle which contains said back pressure valve while the wings are passing its path; with two ports, one on each side of.said back pressure valve, which communicate with both sides of the back pressure valve and with the reversing plug chamber, one of said ports always being closed by the reversing plug while the other is allowed to communicate with the steam chest by means of a sin gle port; a slide valve, with means for operating same, controlling the steam supply through said single port and an exhaust port diametrically opposite the steam ports.

3. In a reversible rotary engine all contained in a single casing, the combination of a closed cylindrical casing which carries a balanced rotor having two diametrically opposite V-shaped wings, with a back pressure valve which slides in a direction at right angles to the plane of rotation of said rotor, with means for operating same, said means comprising a cam suitably mounted on a shaft which is geared to rotor shaft, with a receptacle which contains said backprcssure valve while the wings are passing its path; with two ports, one on each side of said back-pressure valve, which communicate with both sides of the back pressure valve and with the reversing plug chamber, one of said ports always being closed by the reversing plug while the other is allowed to communicate with the steam chest by means of a single port; a slide valve, with means for operating same, said means comprising an eccentric mounted on the rotor shaft, which controls the steam supply through said single port, and an exhaust port diametrically opposite the steam ports, substantially as shown and described.

E. A. BAU'IER.

Witnesses BENJ. W. HE'IHERINGTON, JAMEs B. CHRISTOPHER. 

